The earliest the Winnisquam Regional Middle School is expected to open is Sept. 5.

Parents attended an informational meeting Monday night to learn more about the cleanup.

Dennis Francoeur of RPF Associates, which specializes in environmental health and safety, says the hot, muggy and rainy summer led to the mold growth at the school. He said he believes there was a buildup of moisture in the building.

Francoeur said that the building was professionally cleaned with some rooms sealed off during the vacuuming process. He added that lockers were removed from the walls and cleaned. Contaminated ceiling tiles were removed.

The start of school has been delayed at Hollis-Brookline High School, after E. coli was found in the school's water system.

The wells have been drained, and the entire system has been flushed with heavily chlorinated water.

Freshmen are scheduled to attend school Thursday and upperclassmen on Friday.

A day after Trevor Noah was declared the new host of "The Daily Show," complete with the blessing of the exiting Jon Stewart, graphic tweets targeting women, Jews and victims of the Ebola virus are causing a social media backlash.